Packages the Sonic Visualiser application (source code available on GitHub) as a Flatpak. Inspired by tinywrkb/flatpaks and based on the andyholmes/flatter GitHub action and flatpak-builder-repo.

Not tested in any meaningful way except for "works on my machine", so use at your own discretion.

Use the following command after checking out the repository to build & install the Flatpak locally (requires Flatpak Builder to be installed):

flatpak-builder --force-clean --user --install-deps-from=flathub --install install io.github.cr7pt0gr4ph7.flatpaks.sonic-visualiser/io.github.cr7pt0gr4ph7.flatpaks.sonic-visualiser.yml